Senior Engineer, Security (AppSec)

Arcadia is dedicated to happier, healthier days for all. We believe that there is a better healthcare world – one powered by data. Our platform transforms complex, diverse data into a unified foundation for health, helping organizations deliver better care, boost revenue, and lower costs. We’re a team of fiercely driven individuals committed to making healthcare more sustainable—and we’re looking for passionate people to help us get there. For more information, visit arcadia.io. Why This Role Is Important to Arcadia Arcadia is seeking a Senior Engineer – Security (Application Security) to play a key hands-on role in protecting our cloud-native healthcare platform and the sensitive data entrusted to us. This role focuses on building, operating, and continuously improving application and cloud security controls while actively contributing to detection, incident response, and threat mitigation efforts.  This is a senior individual contributor role for a highly technical security engineer who thrives in execution-heavy environments. You will collaborate closely with peers across the organization to embed security into the development lifecycle, strengthen detection and response capabilities, and reduce risk across Arcadia’s SaaS platform in a highly regulated healthcare environment.  What Success Looks Like In 3 months - Gain a deep understanding of Arcadia’s application architecture, cloud environment, and security tooling  - Begin contributing to application security reviews, threat modeling, and vulnerability remediation  - Participate in active incident response and detection activities  - Build strong working relationships with Engineering, Infrastructure, and Security Assurance teams    In 6 months - Independently own key application security controls and tooling  - Improve vulnerability detection, remediation workflows, and secure-by-default engineering patterns  - Contribute meaningfully to incident investigations, root cause analysis, and post-incident improvements  - Help mature security automation and security-as-code practices    In 12 months - Be a trusted senior technical voice for application and cloud security  - Demonstrate measurable improvements in application security posture, detection coverage, and response effectiveness  - Help reduce security risk through improved design, automation, and operational discipline